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1 2008 P2P B024-5

2 HTTP HTTP FLASH HTTP HTTP P2P P2P P2P P2P P2P P2P P2P P2P BitTorrent Tracker BitTorrent

3 CDN P4P AS : : :

4 Client-Server Hybrid P2P Pure P2P IP IP (In )

5

6 1 1.1 P2P P2P Bittorrent Skype BBC iplayer P2P P2P % [17] HTTP 1.1:

7 YouTube Web HTTP P2P [18] [19] 1.2: YouTube YouTube Flash 6% HTTP P2P P2P HTTP 1.2 HTTP P2P P2P P2P Bittorrent Bittorrent GeoIP AS AS 6

8 HTTP HTTP 3 P2P P2P Bittorrent

9 2 HTTP WEB 2.1: Client-Server 2.2 HTTP HTTP (HyperText Transfer Protcol) Web 8

10 2 HTTP HTTP Web HTTP P2P FLASH 2.3 FLASH OS FLASH 98% PC 2.4 HTTP [8] :

11 2 HTTP ISP IN/OUT P2P 2008 OUT( ) YouTube 2.5 HTTP HTTP YouTube MB P2P GB DVD YouTube HD HTTP ISP OS Windows Vista Windows 7 [20] HTTP 10

12 P2P P2P P2P P2P P2P P2P P2P 11

13 3 P2P Napster Skype P2P P2P Winny Antinny PC P2P P2P P2P P2P 3.2 P2P P2P P2P P2P P2P P2P Napster MSN Messenger IM ( Instant Messenger ) P2P Napster Napster P2P P2P 12

14 3 P2P P2P 3.1: Hybrid P2P P2P P2P P2P Gnutella Winny Skype 3.2: Pure P2P P2P 13

15 3 P2P Skype IP P2P P2P Skype Skype P2P IP IP P2P IP NAT P2P P2P Winny Winny P2P BitTorrent Kontiki Kontiki P2P P2P CDN 3 1 CDN 10 BBC iplayer AOL BSkyB Verizon BB BB TV PtoP OLM P2P 14

16 3 P2P PC PC ISP 3.3 BitTorrent BitTorrent Bram Cohen P2P MB GB Winny Winny BitTorrent Winny BitTorrent.torrent IP P2P WEB CentOS Fedora BitTorrent Tracker BitTorrent info hash ip IP port peer id ID Azureus AZ BitComet BC ID 15

17 3 P2P uploaded downloaded HTTP C++ PHP Python BitTorrent GeoIP AS AS BitTorrent (Seeder) 3.4 BitTorrent P2P DHT P2P BitTorrent 1KB.torrent torrent Web Web torrent Web 3.5 BitTorrent BitTorrent BitTorrent 16

18 3 P2P Tit-For-Tat Winny BitTorrent Tit-For-Tat

19 3 P2P 18

20 P2P HTTP 4.1 ISP ISP ISP ISP ISP ISP ISP ISP ISP IX ISP - ISP - - IX 19

21 4 ISP 4.2 [10] IP TOS 20

22 ISP [12] GB OCN 30GB 1 100GB FTP File Transfer Protocol P2P [?]

23 CDN CDN Contents Delivery Network 1990 CDN CDN 10 15% 10Gbps 72 20,000 20,000 PC P2P P2P CDN BitTorrent [7] 4.7 P4P ISP P2P P2P P4P Working Group (P4PWG) P4P [22] 1. P2P 2. 2 P4P BitTorrent ISP itracker itracker BitTorrent tracker network status/topology provider guidelines/policies network capabilities 2 22

24 4 tracker P4P P4P [1] 23

25 5 5.1 P2P BitTorrent AS 5.2 P2P ISP HTTP P2P P2P BitTorrent Tit-For-Tat BitTorrent Tit-For-Tat P2P Winny P2P

26 5 5.1: 5.2: 25

27 5 5.3 AS AS IP AS IP IP : 1. IP 2. AS AS IP AS IP 3. 26

28 5 4. IP Fedora 8 Linux OS MySQL PHP OpenTraker[23] info hash ip port peer id uploaded downloaded left update time expire time place network AS as AS counter MaxMind GeoLite Country GeoIP PHP API AS AS ASLookup[24] PHP # aslookup -r Target Address : /16: AS17956:WASEDA University r IP JPNIC APNIC whois database AS 1 27

29 IP BitTorrent BitTorrent Tit-For-Tat 2 28

30 BitTorrent 1 Linux OS BitTorrent 2 BitTorrent Vyatta Vyatta Linux OS Cisco VPN 10Gbps Linux SSH Linux Azureus BitTorrent Azureus Azureus Java Java Windows Mac OS X 29

31 6 6.1: OS Router DELL PowerEdge R200 Vyatta Tracker1 DELL Dimension 4500s Fedora 8 Linux BT2 High Position LV1.2 Fedora 9 Linux BT3 High Position LV1.2 Fedora 9 Linux BT4 High Position LV1.2 Fedora 9 Linux BT5 High Position LV1.2 Fedora 9 Linux BT6 High Position LV1.2 Fedora 9 Linux BT7 High Position LV1.2 Fedora 9 Linux BT8 High Position LV1.2 Fedora 9 Linux Linux BitTorrent Torrent UPnP BitTorrent : 1 Linux OS BitTorrent OS OS 3.3GB

32 6 6.1: / /28 100Mbps 1Mbps Mbps

33 6 6.2: : 2 BitTorrent :

34 6 2 OS 3.3GB / /28 100Mbps 1Mbps : IP Mbps

35 6 6.5: IP KB/s MB/s MB/s Mbps 36 1 P2P 6.6: (In ) 34

36 : : 3 AS AS

37 6 6.8: : info hash peer id BitComet BC Azureus AZ JP AS 36

38 7 7.1 P2P BitTorrent AS 8.94 P2P BitTorrent AS AS BitTorrent 7.2 PlanetLab 37

39 7 38

40 39

41 [1] Xie, H., Krishnamurthy, A., Silberschatz, A., and Yang, Y.R., P4P: Explicit Communications for Cooperative Control Between P2P and Network Providers, [2] F5 White Paper, Bandwidth management for peer-topeer applications., Jan http: //www.f5.com/pdf/white-papers/rateshaping-wp.pdf [3] A. Bharambe, C. Herley, and V. Padmanabhan, Analyzing and improving a Bit- Torrent network s performance mechanisms, In Proceedings of IEEE INFOCOM 06, Barcelona, Spain, Apr padmanab/papers/infocom2006.pdf [4] TCP/IP ( ),,, [5] Skype BP, [6] P2P, [7] P2P, [8] Kenjiro Cho, Kensuke Fukuda, Hiroshi Esaki, and Akira Kato, Observing Slow Crustal Movement in Residential User Traffic, [9],, P2P WG, p2p_web/news/ pdf [10] P2P, 2007/pdf/070629_11_1.pdf 40

42 [11] Phillipa Gill, Martin Arlittz, Zongpeng Li, Anirban Mahanti, YouTube Traffic Characterization: A View From the Edge, RFC 3489, March [12] ISP Wiki, [13] Salman A. Baset and Henning Schulzrinne, An Analysis of the Skype Peer-to-Peer Internet Telephony Protocol, September 15, [14],, P2P, 12/14/ [15] Tomo s HotLine, [16] Yahoo! PtoP (Cnet) [17] CacheLogic P2P in 2005, [18] YouTube HTTP P2P (itmedia) [19] BitTorrent battles over bandwidth (BBC) [20] Windows 7 Beta Rollout Fails Without BitTorrent [21] Winny [22] P4P : P2P [23] OpenTraker [24] ASLookup 41

43 [25] Wikipedia:

P2P P2P Winny 3 P2P 15 20 P2P 1 P2P, i

P2P P2P Winny 3 P2P 15 20 P2P 1 P2P, i 26 P2P Reduction of search packets by sharing peer information in P2P communication 1175073 2015 2 27 P2P P2P Winny 3 P2P 15 20 P2P 1 P2P, i Abstract Reduction of search packets by sharing peer information

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